Three of the five teenagers arrested in the fatal shooting of a San Jose paramedic have been charged with murder and carjacking.

The Alameda County District Attorney's office has also filed a petition to charge the three as adults. There was a hearing in juvenile court Wednesday.

This case is shaking some members of the Oakland community to its core.

"It's easy, it shakes my soul," community advocate Ken Houston said. Houston is saddened by that fact that so many teenagers have easy access to guns in Oakland. "You can go to District 5, District 6, District 7… 30 minutes, 45 minutes you can have a gun you can get a gun for $300.”

Boyer was shot and killed in the Oakland Hills on April 2nd.

Upon announcing their arrest Tuesday, Oakland Police Chief Howard Jordan says he is appalled by the ages of the suspects.

"I call on the parents, the school district, adults to help change the vicious cycle that is taking place in this city where young men and women are finding it very easy to point a gun at someone and pull the trigger," Chief Jordan said.